int Sentinel::watch() {
std::string pid_path,
start_cmd;
while (true) {
for (auto it = config_.begin(); it != config_.end(); ++it) {
pid_path = it->first;
start_cmd = it->second;
if (is_process_dead(pid_path)) {
logging::error("Process under: " + pid_path + " not alive.");
if (max_retries_ > DEFAULT_MAX_RETRIES &&
retry_attempts_[pid_path] >= max_retries_) {
logging::critical("Maximum process revival retries "
"exceeded, aborting...");
return stop();
}
logging::info("Invoking: " + start_cmd);
start_process(start_cmd, pid_path);
retry_attempts_[pid_path]++;
} else {
// if the process is alive, reset it's retry attempts counter
retry_attempts_[pid_path] = 0;
}
}
keep_system_alive();
sleep(check_interval_);
}
}
oslProcessError SAL_CALL osl_joinProcessWithTimeout(oslProcess Process, const TimeValue* pTimeout)
{
oslProcessImpl* pChild = ChildList;
oslProcessError osl_error = osl_Process_E_None;
OSL_PRECOND(Process, "osl_joinProcess: Invalid parameter");
OSL_ASSERT(ChildListMutex);
if (NULL == Process || 0 == ChildListMutex)
return osl_Process_E_Unknown;
osl_acquireMutex(ChildListMutex);
/* check if process is a child of ours */
while (pChild != NULL)
{
if (pChild == (oslProcessImpl*)Process)
break;
pChild = pChild->m_pnext;
}
osl_releaseMutex(ChildListMutex);
if (pChild != NULL)
{
oslConditionResult cond_res = osl_waitCondition(pChild->m_terminated, pTimeout);
if (osl_cond_result_timeout == cond_res)
osl_error = osl_Process_E_TimedOut;
else if (osl_cond_result_ok != cond_res)
osl_error = osl_Process_E_Unknown;
}
else /* alien process; StatusThread will not be able
to set the condition terminated */
{
pid_t pid = ((oslProcessImpl*)Process)->m_pid;
if (pTimeout)
{
int timeout = 0;
struct timeval tend;
gettimeofday(&tend, NULL);
tend.tv_sec += pTimeout->Seconds;
while (!is_process_dead(pid) && ((timeout = is_timeout(&tend)) == 0))
sleep(1);
if (timeout)
osl_error = osl_Process_E_TimedOut;
}
else /* infinite */
{
while (!is_process_dead(pid))
sleep(1);
}
}
return osl_error;
}
